x86: move k8 related declarations

Move k8 related declarations to k8.h and fix numa_64.c

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/k8.h b/include/asm-x86/k8.h
index 699dd69..452e2b6 100644
--- a/include/asm-x86/k8.h
+++ b/include/asm-x86/k8.h
@@ -10,5 +10,6 @@
 extern int num_k8_northbridges;
 extern int cache_k8_northbridges(void);
 extern void k8_flush_garts(void);
+extern int k8_scan_nodes(unsigned long start, unsigned long end);
 
 #endif